Fireplace dome



Jung; 1o, 1930.

H. H. wALTERS FIREPLACE DOMEl Filed Feb. 4, 1929 Patented June 10, 1930 UNITED STATES PATENT ovl-FICE HER-BERT H. WALTERS, OF SYRACUSE, NEW' YORK, ASSIGNOR T0` CHEMICAL TOILET CORPORATION, OF SYRACUSVELNEW YORK, A CORPORATION OF NEW YORK FIR-EPLACE DOME Application filed February 4, 1929. Serial No.'337,373.

This invention relatesto. a {ire-place dome, preferably of boiler iron or othersuitable sheet metal adapted to be installed in the upper portion of t-he fire-place to serve as a flue connection between the fire-place and chimney in a manner somewhat similar to the dome of the sheet metal iire-place shown in my pending application, Serial Numberused as a form `against'which the bricks or other masonry may be laid to 'assure the proper deflectionof the products of combustion from the lire-place to the chimney and at the same time to reduce theliability of leakage of the' gas, smoke and other products in transit from the iire-place to the chimney flue;

Other objects and uses relating to specific parts will be brought out in the following description.

In the drawings r-Figure 1. is a front face view of arportion of the brick fire-place partly broken awayl to show a part of one side of the dome.

Figure 2 is a vertical sectional view taken understood l have shown a portion of a brick` fire-place l, of any conventional construction connected by an opening 2 to the chimney flue 3, in which is placed an upwardly tapered dome 4 of boiler iron or other suitable sheet metal.

It is of course preferable to install this A further object is to permit the dome to be V during the :initial construction of the lire-place and chimney, but obviously it may be installed in previously built fire-places and when thus installed forms a flue connection between the fire-place proper and the flue in the chimney, as shown in Figure 2.

rEhe chimney flue 3 is usually rectangular in 'cross section and of considerably less area than the horizontal area of the lire place opening and is also preferably located some distance to the rear of the vertical lcenter of the fire-place and approximately midway between the opposite sides thereof and, Vfor this reason7 the upper end of the hood 4 is kof correspondingly less area than its base, so

that its front wall and its opposite sidewalls are inclined upwardly toward the apex of the Ydome while the rear side may be disposed in a substantiallyvertical plane as shown in Figure 2.

The opening as 4 in the apex of the dome 4 is rectangular and corresponds approximately to the cross sectional area of the flue Bwith which it is registered. Y

The bottom wall 5 of the dome 4 is substantially flat and horizontal and extends forwardly from the rear wall to the front wall except that its front portion adjacent to the front wall is provided with a draft opening 6 to permit the passage of the products of combustion from the fireplace into the dome and thence out through the flue 3.V

This opening or passage 6 is controlled by a damper 7, having its lower rear edge seated in the groove of a V-shaped member 8 which is secured to the upper face of the vbottom wall 5 just at the rear'of the opening 6 with the upper side of the groove facing upwardly.

The'damper 7 extends the full length of the opening 6 within the dome 4 and when seated in the grooved member 8 may berocked forwardly and rearwardlyinto and out of an engagement within the inner faceof the front wall of the dome as shown in Figure 2. That is, the damper is fulcrumed on the member 8 and is of greater cross sectional width than the transverse width of the opening 6 so that when closed it will assume an upwardly and forwardly inclined position ends in close proximity to the end eof Yeo

Walls of the dome thereby forming what may be termed a defiecting plate Which cooperates with the rear portion of the bottom Wall to prevent down-draft from the smoke iiues into the lire-place.

1When the damper is opened, as shown by dotted lines in Figure 2,`it also cooperates With the bottom Wall 5 to deflect the products of-combustion upivardly in case of down- 4draft through the flue thereby reducing to a minimum theliability of blowing the smoke and ashes from the fire-place into the room in which the latter is located.

For example when the damper is in its closed or open position it will always pro- `.ject upwardly more or less from the bottom `vvall 5 justat the rear of the opening G, so

'that any down-draft through the flues Will iinpinge against the bottom Wall 5 and will then be deflected upwardly by the damper 7 `to "pass out through the flue-'near the front side thereof While the down-draft may at the same time flow downwardly' along the rear side of the'iflue.

The base of the dome is provided with outwardly projecting marginal flange 5 along the loiver `edges of the opposite side Walls and rear `Wall Aof the 'dome to be incorporated in the inason'ivorl; of the lire-place for firmly holding 4the dome in operative position.

The-damper 7 is vprovided With an operat- "ing member 9, having its upper end riveted or otherwisely rigidly secured at 10 to the front face of the intermediate portion of the damper and 'its remaining portion extended 'downwardlythrough the opening -6 and into the fire place 1, the lower end of said member being provided with an eye 11 to which may be connectedvany suitable instrument for `rockingthe damper about its fulcrum member'8.

rlhe member 9 is provided with a lug 12, adapted to 'be engaged by a -paWl 13' which is pivoted at 14@ to the under side of the bottom Wall 5 'of-the dome to extend foruf'ardly from its pivot across the 'upper side of the lug 12,

has its loiveredge serrated at for interlocking engagement With said lug 12.

Theforivard end of the pawl 13 is Weighted vtoautomatical'ly engage its serration 15 with the l-ug 12, to hold the damper in its adj usted position as theoperating member 19, is moved forwardly and rearwardly.

The front,` rear and side Walls of the'dome ft-arerigi'dly secured to each 'other'to form gasitight joints 'and forlthe same purpose "the lower-edges of said Walls arerigidly secured to the bottomv plate 5 around the openi1`ig'(i,*so`that the products of combustion "escaping from the lire place Willpass'through tured and sold at a comparatively low cost and during installation serves as a form against which the masonry may be constructed and When installed affords a smooth lining for the upper portion of the fire place to reduce the liability of the accumulation of soot and also to afford a more edective up- Ward draft for the products of combustion.

Another advantage that the same device may be used as a support for the damper which in its peculiar relation to the bottom 5 of the dome reduces to a minimum the liability of a down-draft from the flue into the fireplace.

lt Will also be noted that the particular manner of supporting the damper 7 upon the fulcrum 'bearing 8 permits said damper `to be placed in an operative position and removed through the opening 6 by simply lifting it outof engagement with its member 3 and'then tilting it endvvise and transversely until it free to pass through said opening.

YWhat l claim is:

1. A sheet metal' dome adapted to be installed as a connection between the upper portion of a tire-place and smoke liuc of the chimney and comprising an Vupwardly tapered tubular shell having a horizontal bottom Wall provided with a relatively narrow opening therethrough adjacent the front wall to ailoiv the passavo of the products of combustion from the iireplace to the interior of the shell, a V-shaped bearing member secured to the bottom Wall adjacent the rear Wall of the opening with its open side uppermost, and a damper loosely fulcrumed in the open side of said member for rocking movement to and from a position `aeross said opening and adapted to be removed from said member by Lupward displacement.

2. A sheet metal fireplace dome as in claim 1 in v/hich'the bottom plate and front wall of the shell form an acute angle with each other, and the damper, when closed, extends from the rear Wall of said opening across said angle.

In Witness whereof l have hereunto set HERBERT H. VALTERS.

Ulli 

